Glee has already tackled Rocky Horror and West Side Story, and now they've lined up yet another musical: Grease! In this week's episode, the New Directions will tackle the iconic "Summer Nights," and it looks like Sam and Mercedes are the ones doing the gossiping. Get a sneak peek at all of the '50s-style goodness.
Sneak Peek: Glee Channels Grease
From Our Partners